I felt the same way until I found a couple girlfriends and eventually got married.
I still enjoy being alone, though I do feel vaguely sad that my wife isn't with me during some of that time, especially if it's for days in a row.
But being alone doesn't make me sad in itself.
I guess what I'm trying to say is that not everyone is made the same, and some of us don't really have a problem being by ourselves for extended periods. Others have serious problems with it.
I still enjoy being alone, though I do feel vaguely sad that my wife isn't with me during some of that time, especially if it's for days in a row.
But being alone doesn't make me sad in itself.
I guess what I'm trying to say is that not everyone is made the same, and some of us don't really have a problem being by ourselves for extended periods. Others have serious problems with it.